Finding the Fourth Proportional to 1,401.48, 2,101.95 and 671.94

Step by Step Solution

1. Step 1: Write the proportion equation
   1,401.48 : 2,101.95 = 671.94 : x
2. Step 2: Convert to fraction form
   1,401.48/2,101.95 = 671.94/x
3. Step 3: Cross multiply
   1,401.48x = 2,101.95 × 671.94
4. Step 4: Simplify right side
   1,401.48x = 1,412,384.28
5. Step 5: Solve for x
   x = 1,412,384.28/1,401.48
6. Step 6: Final answer
   x = 1,007.78